Portable pneumatic drill.



No. 630,357. Patentad Aug. 8, I899.

H. J. KIMHAN.

PORTABLE PNEUMATlC DRILL.

(Appheation filed Aug 8 1898) 5 Sheets-Sheet I.

(No Model.)

No. 630,357. Patented Aug. 8, I899. H. J. KIMMAN.

PORTABLE PNEUMATIC DRILL.

(Application filed Aug. B, 1898.)

(no Model.) s Sheets-Sheet 2.

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No. 630,357. Patented Aug. 8, I899.

H. J. KIMMAN.

PORTABLE PNEUMATIC DRILL.

(Application filed Aug. 8, 1898.)

5 Shets-Sheet 3.

(No Model.)

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No. 630,357. Patented Aug. 8, I899.

- H. J. KIMMAN.

PORTABLE PNEUMATIC DRILL.

(Application filed Aug. 8, 189B.) 7 (No Model.) 5 Sheets-Sheet 4.

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I mrmm Patented Aug. 8, I899.

IL J. KIMMAN. POBTABLE PNEUMATIC DRILL.

(Applicatiqn'flled Aug. 8, 1888.)

5 Sheets-Sheet 5.

(No Model.)

UNITEDQSTATES PATENT OFFICE.

HENRY J. KIMMAN, on CHICAGO, ILLINoIs, ASSIGNOR or ONE-HALF o EDWARDNASH HURLEY, on SAME PLACE.

PORTABLE PNEUMATIC DRILL.

'sPnoIFIoATIoII forming art or Iletter s Fate nil no. 630,357, datedAugust 8,1899.

Application filed August 8; 1892..

To all whom it may concern Be it known that I, HENRY J. KiMMAN, acitizen of the United States, residing at Chicago, in the county of Cookand State of Illinois, have invented certain new and useful Improvementsin Portable Pneumatic Drills, of which the following is a specification.

My invention relates to that class of mechanisms in which therearecombined'fiuid= pressure engines which are portablein their nature andwhich are adapted to and are connected with other mechanisms, such asdrills, for the purpose of assisting in hand labor and minimizing thecost incident to the manufacture of large machines. u I

The principal object of my invention is to produce a simple, economical,and efficient portable pneumatic'drill.

A further object of my invention is to provide a simple, economical, andefficient portable pneumatic drilling mechanism having combinedtherewith several fluid-pressure cylinders, all arranged in one compactorganized tool.

The invention consists principally in the combination of at least twosets of fluid-pressure cylinders arranged in parallel lines, areciprocating piston in each cylinder, a rota table crank-shaftconnected with the piston,

a reciprocating valve for each line of parallelarranged cylinders, anddrill-holding mechanism connected with the crank-shaft and arranged tobe driven thereby. I,

The invention consi ts, further and finally, in the features,combinations, and details of construction hereinafter described andclaimed. j

In the accompanying drawings, Figure 1 is a perspective view of anorganized machine constructed in accordance with myimprovements; Fig. 2,a longitudinal sectional elevation taken on the lines 2 of Figs. 1, 3,and 5; Figs. 3 and 4, cross-sectional views taken on the lines 3 and 4of Fig. 2, looking in the direction of the arrow Fig. 5, across-sectional view taken on the line 3 5 of Fig. 2, looking in thedirection of the arrow. Figs. 6 and 7 are cross-sectional views taken"on the lines 6 and 7 of Fig; 2, looking in the direction of the arrow;Fig. 8, a longitudinal sectional elevation of the throttle-valve, takenon line 8 of Serial No. 688,088. (No model.)

Fig. 1; Figs. 9 and 10 are detail views of the throttle-valve, and Figs.11 and 12 cross-sectional views taken 011 the lines 11 and 12 of Fig. 8.

In constructing a portable pneumatic drill in accordance with myimprovements I make a main casing A of the desired size, shape, andstrength, preferably segmental in contour, as shown in the accompanyingdrawings, and which is adapted to support, contain, andinclosepractically all of the opera tive and other parts of the machine,as well as to efiiciently protect the same from exterior influences,such'as dust, dirt, and the like.

" In' this casingI preferably arrange two sets I of fluid-pressurecylinders,located in difierent planes and in parallel lines, thecylinders in each set'preferably being arranged at right angles to eachother. These cylinders, as above stated, are arranged in sets, the firstset consisting of the cylinders B and B, the second set consisting ofthe cylinders O and G, and, as above stated, arranged substantially'atright angles to each other, so that the movable pistons 19, h, c, and c,which are arranged therein, acting through the medium of theirrespective piston-rods b and c bear on the crank-shaft D at difierenttimes and in diiferent positions, so as to avoid what is commonly knownas the dead-center and at the same time to give the successive impulsesto the crank-shaft and provide for uniform rotation of the same,with thepractically constant transmission of power and motion. In order toeconomically provide for the ad mission of fluid-pressure into thecylinders and for the exhaust of the same, I provide two piston-valves Eand E, which are arranged in what I term a valve-casing F, whichis ofthe same contour as the main casing. These piston or controlling valvesare further arranged so that there is one for each line ofparallel-arranged cylinders and also substantially at right angles toeach other, while their movements are so timed as to permit of theadmission of fluid-pressure and its subsequent exhaustion.

The valve-casing is provided with a main pressure-chamber f, havingcommunication with the supply-pipe G by means of the channelf. Thecylindrical chambers of the first 2' cadet? set have communication withthe fluid-pressure chamber through the medium of the controlling-valvesby means of the channels bring its longitudinal passage 6 intoregistration with the passage f so that. the fluid-- f and f thelocation of which is shown in dotted lines in Figs. land 6 and in fulllines in Fig. 3, so that as the piston-valves are reciprocated or movedfluid-pressure may flow pressure may be exhausted from the cylinder B,and thus permit such cylinder to be returned, the pressure passing outthrough the, opening e? in the valve-chamber head.

The pressure is admitted and exhausted from the cylinder B, passes inthrough the;

opening and into the chamber formed-by the: annular channel f in thepiston valve, so that when such channel is brought into registrationwith the irregular channel f the pres sure flows, through from the mainpressurechamberthrough the chamber f and channel f into the cylinder Bbetween the head; thereof and the piston to operate the same, When thepiston has. reached the limit of its forward movement, the reciprocatingvalve has been operated by its rod E which isconnected with thecrank-shaft, so as to bring its longitudinal passage e into alinementwith theirregular passage f and permit the fluidpressure to be exhaustedthrough the opening 6 into the valve-chamber head.

In order to supply fluid-pressure to and exhaust it from the second setof cylinders, such second set, of cylinders, as shown in Fig. 7, areprovided with channels and 0. (Shown also in Figs. 3 and 4:.) The samecontrolling piston-valves operate to open and closethese passages,sothat pressure may flow from the main pressure-chamber through theannular chamber f and, when it is brought into. register therewith,through the channel 0 into the cylinder Obetween its casing and themovable piston, to operate the piston.

, As shown in- Fig. 4 of the drawings, the controlling piston-valve E isin condition to permit of the exhaust, so that fluid-pressure may flowthrough the channel a and into thelongitudinal passagev e of thecontrolling;-

valve-chamber head.

With1 regard to the operations of the pisten 0 in the cylinder 0, thefluid-pressure passes from the fluid-pressure chamber in thevalve-casinginto the annular channel f from thenceinto the passage orchannel c and, as

, shown, in Fig. 7, into the cylinder between the piston and thecylinder-head to operate such piston. The exhaust is accomplished whenthe controlling piston-valve is moved so that the slot 6 coincides withthe perforation in the channel 0 so as to permit fluidpressure toexhaust from the cylinder .to the channel 0 perforation or slot e intothe longitudinal passage e of the controlling-valve, and out through theslotted opening e in the valve-chamber head. By this construction andarrangement it will be seen that there is a controlling piston-valvemade in a certain specific form and provided with specific channels forcontrolling two reciprocating pistons arrangedin multiple relation andparallel therewith and with each other, thus providing for a compactorganized portable pneumatic drill.

In order to provide a simple, economical,

. and efficient main valve and shut off, the supply of fluid-pressure, Imake a throttle-valve,

, as shown in Figs. 8, 9, 10, 11, and 12, in which 1 there is combined asupply tube or pipe H,

having a sleeve or tube h secured thereto, so as to extend therein andprovide an annular chamber 77/ between it and the continuation H of thesupply-pipe.

An inner cylindrical valve I is held in place in the inwardly-extendingtube by means of the plug 72 is secured to a shell or handle 1 by meansof This cylindrical valve the screw 1, which operates in the slotH inthe inwardly-projecting tubular extension of 5 the supply-pipe.

The tubular extension of the supply-pipe and the cylindrical valve areprovided, with perforations or openings h and t, which are adapted toregister with each other when the handle portion is turned 4 to theproper position, or to be out 01f from registering with each other, soas to permit of the entrance of fluid-pressure, as indicated by thearrows, or to out off the supply thereof.

In order to economically combine a portable pneumatic or fluid-pressureengine with drilling mechanism, so as to provide a compact organizedmachine'tool, 'I provide the casing with an extension A,.in which ismounted in suitable bearings a rotatable, holdingsleeve K, havingaspur-gear 70 secured thereto. This spur-gear k meshes with a spurpinionk on the crank-shaft, so as, to be rotat-ed thereby and also rotate theholdingsleeve. The holding-sleeve is provided with a tapered opening 70and an exteriorly-threaded portion it the first for the reception of thetapered shank of drills like that. shown at J in Fig. l and the secondtoreceive the threaded hubs or bushings of chucks and similarmechanisms.

valve, and out through the opening e into the In order to provide foreconomical feeding of the tool into the proper position, I provide asleeve L, which forms an independent extension of the tool-holdingsleeve and which 7 is threaded at l, so asto be engaged by a feedscrewL, having threaded engagement therewith, and which is provided with astar-handle Z and pivot Z drill; but when moved in the other directionit permits the drift-pin to be moved back- Wardly and not interfere withthe engagement of the drill or other tool with the tool-holdin g sleeve.

I claim-- 1. In a portable pneumatic drilling-machine, the combinationof at least two sets of fluid-pressure cylinders arranged in differentplanes and in lateral parallel lines to a crankshaft and having at leasttwo cylinders in each set with the cylinders of a set standing diagonaland in a substantially transverse parallel line to each other onopposite sides of the crank-shaft, a reciprocating piston in eachcylinder, a crank-shaft connected with each piston, a controllingreciprocating valve on each side of the crank common to all thecylinders on the same side of the crank-shaft arranged diagonal to eachother and parallel with the cylinders and connected with and operatedfrom the crank-shaft for admitting and exhausting fluid-pressure to andfrom each line of laterally-arranged cylinders, and drill-holdingmechanism connected with and adapted to be rotated by the crank-shaft,substantially as described.

2. In a portable pneumatic drillingmachine, the combination of a casingprovided with two sets of fluid-pressure cylinders arranged in differentplanes and in parallel lines to a crank-shaft and having at least twocylinders in each set with-the cylinders of a set arranged on oppositesides of the cran k-shaft substantially at right angles to each otherand in a transverse parallel line, a reciprocating piston in eachcylinder, a rotating crankshaft connected with the piston in eachcylinder, a controlling-valve on each side of the crank-shaft, one foreach lateral line of parallel-arranged cylinders and common to thecylinders of such line and arranged in a transverse parallel line withthe cylinders of a set and operated to cut as fluid-pressure from andadmit fluid-pressure to each cylinder in the line of laterally-arrangedcylinders, and

drill-holding mechanism connected with and adapted to be rotated by thecrank-shaft, substantially as described.

3. In a portable pneumatic drillingmachine, the combination of a casingprovided with two sets of fluid-pressure cylinders arranged in diiferentplanes and in lateral parallel lines with a crank-shaft and having atleast two cylinders in each set with the cylinders of a set arranged onopposite sides of the crank-shaft substantially at right angles to eachother and in a transverse parallel line, a reciprocating piston in eachcylinder, a crank-shaft provided with a crank arranged opposite each ofsuch cylinders and connected with thepistons in the cylinders of theset, a controlling piston-valve for each lateral line of cylindersarranged in a transverse line parallel with each other and with thecylinders of the set and connected with the crankshaft to be operatedthereby and having each valve provided with annular and longitudinalpassages to regulate the admission and exhanst of the fluid-pressureduring the motions of the controlling-valve to and from the cylinders ofits line of laterally-arranged cylinders, and drill-holding mechanismconnected with and adapted to be rotated by the crankshaft,substantially as described.

4. In a portable pneumatic drillingmachine the combination of a casingprovided with at least two set-s of fluid-pressure cylinders arranged inparallel lines having two cylinders in each set substantially at rightangles with each other, a reciprocating piston in each cylinder, acrank-shaft provided with a crank arranged opposite each set ofcylinders and connected with the movable pistons therein, a valve-casingforming a cap for the cylinder-casing and provided with a fluid-pressurechamber and valve-chambers arranged at right angles to each other onefor each line of parallel-arranged cylinders, a reciprocatingpiston-valve in each valve-chamber connected with the crank-shaft andprovided with annular and longitudinal passages or chambers, channelsleading from each valve-chamber to each cylinderin the line ofparallel-arranged cylinders so as to provide for and cut offcommunication with the fluidpressure chamber and each cylinder in theset during the reciprocations of the controlling piston-valve, anddrill-holding mechanism connected with and adapted to be rotated by thecrank-shaft,substantially as described.

5. In a portable pneumatic drilling-machine, the combination of a casingprovided with at least two sets of fluid-pressure cylinders arranged inparallel lines having two cylinders in each set substantially at rightangles with each other, a reciprocating piston in each cylinder, acrank-shaft provided with a crank arranged opposite each set ofcylinders and connected with the movable pistons therein, a valve-casingforming a cap for the cylinder-casing and provided with a fluidpressurechamber and valve-chambers arranged at right angles to each other onefor each line of parallel-arranged cylinders, a reciprocatingpiston-valve in each valve-chamber connected with the crank-shaft andprovided with annnlarand longitudinal passages or chambers, channelsleading from each valve-chamber to each cylinder in the line ofparallel-arranged cylinders so as to provide for and cut oifcommunication with the fluidpressure chamber of the valve-casing andeach cylinder in the set during the reciprocations of the controllingpiston-valve, a cap for each valve-chamber provided with an openingthrough which finid-pressure maybe excrank-shaft, substantially asdescribed.

6. In a machine of the class described, a

supply-pipe provided with a rotary throttlevalve in which there iscombined a su p-1 ypipe, an inwardly axial projecting tubular extensionthereof perforated and iminovably connected therewith so as to providean annnlar chamber between it and the supply pipe, a rotary valve in theinwardly-extendi'ng portion provided with a perforation adapt- 1 ed toregister with the perforation in the ex tension, and a rotatable shellor handle porti-on surrounding the supply-pipe and w substantially asdescribed.

7. In a portable pneumatic drill, the combination of a rotatable sleevehaving a tapered or s-iniilartool', fluid-pressure cylinders andintermediate; mechanism adapted to trans form the energy in suchcylinders into rotations of the tool-holder, a tubular extension on suchtool holder provided with an internal: threaded and axial opening, amovablepini 1 in such opening, and a threaded-plug adapted to operatethe pin backwardly and forwardly, substantially as described.

8. In a portable pneumatic drilling ma chine, the combination of twolines of fluidpressure cylinders, one line on each side ofa a piston ineach cylinder, means connectinga ndactnating the valves from the crankshaft, a drill, and mechanism operating the drill by therotat-ion of thecrankshaft,v sub stantially as described.

9. In a portable pneumatic d'rillingchine, the combination of a casing,93 system of cylinders arranged in sets within the easing" and havingone: cvlinder of each set on one side and the other cylinder of eachsetonthe opposite sideof a crank-shaft forming a lineof cylinders on twosides of the crank shaft, a, fluid-pressure chamber common to all the:cylinders, passages oneach side of the casing, one-passage for eachcylinder on each side of the crank-shaft, valves, one for each line ofcylinders, each valve control-lingthe passages to its respectiveline ofcylinders; a crank-shaft, a piston in each cylinder connected with thecrank-shaft, ad-rill,an"d mechanisnr for operating the drill by therotation of thecrank-shaft, substantially as described.

chine, the combinatiom of a main casing, a

fluid-pressure chamber in said casing, passages leading from thefluid-pressure cham- 1 her on eachside of the main casin a valve 7controllingthe passages from the aid-pressure chamber on each side,v aseries of cylinders on each side of the main casing in com municationwith the fluid-pressure chamber 5 throughthe side passages and valves, acrankshaft operated by the cylinders, and a drill mechanism operated bythe crank-shaft, substantially as described.

11. In a portable pneumatic drilling-inachine, the combination of a maincasing, a

cap or cover at one end of the maincasing havinga pressure-chambertherein,-a passage sion thereof and connected with the valve so as torotate both of such parts simultaneously,

in the main chamber communicating with the 2 source of pressuresupplyand the pressurechamber of the-cap; passages on opposite sides of thepressure-chamberleading one each to 5 a pressure-cylinder, a valve-casing for" each recess adapted to receive the shank ofa drillv 1 side of thecap, and a valve ineach casing as described.

12. In a port-able pneumatic drilling-machine, the combination of a maineasing, a cap or cover at oneendof the main casinghaving apressure-chamber therein, a passage in the main chamber'coinmnnicatingwith thesou rce of pressure-supply and the: pressure chamber of the cap,passageson oppositev sides of the pressure ehamber leading one-each teapressnre cyli n d er, a-valve-casing for each side of -the cap, a: valvein each casing, an annular passage around the exterior of each valve, alongitudinal passage through each valve, a port fromthe:pressure-chamber-co'ininunicating with the annular passage aroundthe valve a port at each end of the valve-casing 1 communicating withthe longitudinal passage of the valve and with the: pressure-chamberpassages, a port through the-wall of the valve at each end communicatingwith the longitudinal passage in the valve and with the portsof the sidepassages; and means forreciproeating the valves to control the admissionof i fluid-pressuretoand the-exhaust of fluid-pressure from the:cylinders, substantially as del scribed.

13. In: a portable pneumatic drilling m achine, the combination of amain easing having at one end a cap, a pressure-chamber in the cap, apassage from the pressure-chamtoa second pressure-cylinder on thesameside of acrank-shaft, avalve-casi-ng' at the side of thepressure-chamber having'communica-tion with the passages of suchchamber, and areciprocating valve in the valve-casing having passagesand ports communicating with the 1 pressure-chamber and with thepassagesleading therefrom to the pressure-cylinders; subs tan-ti-ally'as described.

10. In aportable pneumatic drilling-ma "i 14. In aportable pneumaticdrilling-machine, the combination of a main casing having at one end acap, a pressure-chamber in the cap, a passage from the pressure-chamberleading to a pressure-cylinder, a second passage from thepressure-chamber leading to a second pressure-cylinder, twopressurecylinders in the main casing, a valve-casing at the side of thepressure-chamber of the cap having communication with the passages ofsuch chamber, a reciprocating valve in the valve-casing, an annularpassage on theexterior of the valve communicating with the

